Data Item _reflns_shell.meanI_over_sigI_obs
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General 
- Item name
- _reflns_shell.meanI_over_sigI_obs
- Category name
- reflns_shell
- Attribute name
- meanI_over_sigI_obs
- Required in PDB entries
- no
- Used in current PDB entries
- Yes, in about 53.0 % of entries
Item Description
The ratio of the mean of the intensities of the reflections
classified as 'observed' (see _reflns.observed_criterion) in
this shell to the mean of the standard uncertainties of the
intensities of the 'observed' reflections in this
shell.
Additional Descriptive Information for Depositors
The ratio of the mean of the intensities of the reflections
classified as 'observed' (see _reflns.observed_criterion) in
this shell to the mean of the standard uncertainties of the
intensities of the 'observed' reflections in this
shell.
Data Type 
- Data type code
- float
- Data type detail
- float item types are the subset of numbers that are the floating numbers.
- Primitive data type code
- numb
- Regular expression
- -?(([0-9]+)[.]?|([0-9]*[.][0-9]+))([(][0-9]+[)])?([eE][+-]?[0-9]+)?
Advisory Boundary Conditions
| Minimum Value | Maximum Value |
|---|---|
| 0.05 | 20 |
Aliases
| Alias Item Name | Dictionary Name | Dictionary Version |
|---|---|---|
| _reflns_shell_meanI_over_sigI_obs | cif_core.dic | 2.0.1 |